Lighting fixture construction



J. LEVY March 28, 1939.

LIGHTING FIXTURE CONSTRUCTION Filed Nov. 26, 1957 2 She ts-Shet l INVENTOR JOSEPH LEVY ;4% ATTORNEY 7,7 27a, 5627 k18c March 28, 1939. I J. LE 2,152,197

I LIGHTING FIXTURE CONSTRUCTION Filed Nov. 26, 1957 '2 Sheets-Shet 2 L llllllllllllll INVENTOR JOSEPH LEVY ATTORNEY Patented Mar. 28, 1939 UNITED STATES PATENT OFFICE tury Lighting, Inc., York a corporation of New Application November 26, 1937, Serial No. 176,451

6 Claims.

This invention relates to the lighting fixture art and more particularly is directed to the electrically lighted illuminating fixture construction for projecting light beams either as spot or flood light in various directions.

Among the objects of the invention is to generally improve lighting fixture constructions of the character described which shall comprise few and simple parts that are readily assembled and adapted to form interior electric lighting fixtures of attractive appearance, which shall be easily adjusted for projecting light beams as spot and flood light in various desired directions, which shall be inexpensive to manufacture and practical and eflicient to a high degree in use.

Other objects of this invention will in part be obvious and in part hereinafter pointed out.

The invention accordingly consists in elements of construction, combination of elements and arrangement of parts which shall be exemplified in the construction herein described and of which the scope of the invention will be indicated in the following claims. I

In the accompanying drawings in which is shown various possible illustrations of this invention,

Fig. 1 is-a front elevational view of a ceiling surface mounting type of electric lighting fixture adapted to be 'used for interior illumination con- 30 structed to embody the invention, parts being broken away to expose the electric light bulb, the full line position of the opening in the radially adjustable bottom closure being shown when directing the light beams downwardfrom the fixture and in dotted line when said opening adjustable closure' is positioned to project the light beams to one side instead of downward.

Fig. 2 is a bottom plan view of the fixture shown in full lines in Fig. 1, partly broken away to expose the lamp receptacle and bulb.

Fig. 3 is an enlarged cross-sectional view taken on line 3-3 of Fig. 2.

- Fig. 4 is a detailed view as seen on lines 4- in Fig. 2.

Fig. 5 is a cross-sectional view taken on lines 5--5 in Fig. 4.

Fig. 6 is a cross-sectional view taken on lines 6-6 in Fig. 3. 1

Fig. 7 is a perspective view of the ring memher for mounting the lens in the opening of the radially adjustable closure.

Fig. 8 is a front elevational view similar to Fig.

1 showing an embodiment of the invention applied to lighting fixtures of the ceiling recessed mounting type with the light beams directed downward from the fixture.

Fig. 9 is a bottom elevational view of the fixture shown in Fig. 8, and

Fig. 10 is an enlarged detailed cross-sectional view taken on line I0I0 in Fig. 9. In dotted lines the opening adjustable closure is indicated when projecting the light to one side instead of downward.

Referring now to the drawings 20 denotes a ceiling surface mounting type of electric'lighting fixture constructed to embody the invention and adapted to be used for interior illumination for dwelling, show rooms, display windows, and other purposes, particularly where a stationary lighting fixture is required to project spot or flood light in various desired directions.

As seen from Figs. 1, 2 and 3, the fixture 20 is mounted against the finished surface S of ceiling C or other support in which an outlet box II is embedded, said box II being of any standard construction terminating a building wiring system for supplying electric power in the well known' manner (not shown) 7 for lighting the fixture 20.

The construction of fixture 20, as seen from Fig. 3, may include a circular shaped back plate I2 adapted to contact the finished ceiling surface S, said plate I2 being retained in position by any suitable anchoring fastener, such as spaced screws I211. Supported to extend down from said plate I2 are spaced bolts I3 which have rigidly secured thereto inner ends Ma of Z-brackets I4, the outer end Nb of said brackets I4 may be fastened by any suitable means as bolts Me, in superimposed relation to an outturned flange I50. of a cylindrical housing I5. The flange I5a is also similarly fastened in superimposed relation by said bolts Mo to angle pieces I let, the latter being secured to an inner upturned rim flange Ifia of a base ventilating bafile annulus I6 by bolts I ie. The annulus I6 is formed preferably of a bent or spun sheet metal gracefully shaped and terminating at its outer rim in a bead IIib adapted to extend around the periphery of the back plate l2.

The diameter of the cylindrical housing [5 may be made smaller in diameter than the inner diameter of the annulus I6, the latter being positioned in concentric relation to saidhousing I 5 to provide air passages II between the annulus I6 and housing I5, forming ventilating ans as indicated by the dotted arrow line in Fig.3..

The above described assembly provides the stationary or relatively fixed portions of the fixture 20 and forms with a bottom closure or shell II a casing for enclosing a light source mounted for radial movement with said shell I0 in the manner now to be described.

Said closure or shell I0 as seen from Figs. 1. 2 and 3 comprises a hollow hemi-spherical shaped bowl or bell provided with an outward turned flange Ila, the bowl It with housing I! forming a socket type of radially swivelling joint to permit so-called universal movement. Said housing I5 may have an inturned annulus bead Iib serving as a seat for the bowl I0, said flange I la cooperating with the seat to limit the said movement and prevent dislocating the universal joint after assembly.

The bowl I8 has mounted to move therewith a lock ring l8b which extends around the perimeter of an opening lie, and secured to said ring I8b by any suitable means, as screws I3, is an ofiset upstanding arm 30. An angle carrier 2| is slidingly fitted to move on said arm 30 and through a slotted portion 30a thereof, a suitable adjustment screw mechanism 22 being provided for moving and retaining said carrier 2I at desired distances from said opening I80.

Said carrier 2I has secured to move therewith a lamp receptacle 23 in which an electric light bulb 24 is mounted. The angle carrier 2| above the receptacle 23 and the bulb 24 supports-a suitable reflector 25 for directing the reflected light beams from the bulb 24 to the opening I8c, suitable conductor wires 20 being provided to connect the lamp receptacle 23 to an electric power source through the outlet box II.

- The carrier 2| is seen to engage a screw 22a of the adjusting mechanism 22 through a projecting threaded lug 2Ia, and a lock ring 22b may be provided for retaining the screw head 220 in a fixed position against up and down movement in a seat projecting portion 30b of said arm 30. Thus, by turning the adjusting screw 22a, the bulb 24 and the reflector 25 may be moved from the position shown in Fig. 3 for providing projected spot lighting to a lowered position closer to the opening I00 for providing projected flood lighting.

Fitted into said lock ring I8b is a lens holder 21, said holder being releasably fastened to the ring I8b by any suitable means, as a bayonet joint 28, formed by slot opening I8d of a flange I80 on the ring I81) and spaced screws 29 carried by said holder 21 adapted to engage said slot openings ltd. The holder 21 may be grooved at 21a to seat a suitable lens.3l which is removably held in fixed position with relation to the holder 21 by means of a spring ring 32.-

In ractising the invention with the fixture I0, the parts are made and assembled as described above and shown in Figs. 1-7, inclusive, the conductor wires 26 being connected to a suitable power source preferably through an electric.

switch in the well understood manner (no shown). With the parts positioned as shovfi in Fig. 3, the optical system is so arranged that the light beams produced in the bulb 24 and reflected will be projected through the lens 3| in opening I8c as a spot light in a downward direction. The light beam may be projected in various other radial directions with a simple universal swinging movement of the closure shell I8" in its-socket joint, as for example to its extreme side position shown in dotted lines in Fi 1.

To change the character of the lighting projected from fixture 20 from a spot to flood lighting, all that is necessary is to vary the optical system by inserting a screwdriver in the opening Ile provided in the shell I8 and turn the screw 22 until the carrier 2| with the receptacle 23 and bulb 24 is positioned closer to the lens 3|.

The bulb 24 may be inspected and replaced by releasing the lens holder 21 and lens 3| by turning the bayonet joint 20 and dismounting same from the opening I8c to give access to the interior of the fixture 20. Ventilation is provided through the passages I'I.

A modified form of the invention is shown in Figs. 8, 9 and 10. Here the fixture I20 is of the ceiling recessed type and the cylindrical housing ii of fixture 20 is replaced by a casing II5 having an inturned flange ring 5b which engages the shell I0. The casing II5 may be mounted in the ceiling C or other support by an angle piece 23 and screws 34, the flange ring I I5b being secured to the housing by suitable bolts 35. The ring 5b has a bead IIic serving as a seat for the shell I8 in the identical manner as describedabove-for fixture 20. The parts of fixture I20 carried by the shell I8 may be identical to those described above for fixture -20 and are adjusted in substantially the same manner and for the same purposes.

In both these constructions the lens holder 21 may be formed with a flange 21b for attaching a suitable screen 36 for changing the color of the projected light beam passing through the lens 3|.

As seen from Figs. 3 and 11, the shell IB-has the opening I8c thereof located not directly opposite or parallel to the plane of the flange Iiia but rather in angular relation thereto so as to permit maximum radial adjustment in the socket joint for varying the direction of the projecting light beams passing through the lens 3| and opening I8c.

From Figs. 3 and 7 it is clear that both fixtures 20 and I20 may be used without the lens 3| and with or without the screens 35, or that a ground glass or other light dispersing means may replace the lens II.

It will thus be seen that lighting fixture constructions are provided in which the several objects of the invention are achieved and which are well adapted to meet the conditions of practical use in an efilcient manner.

As various embodiments might .be made of the above invention and as various changes might be made in the embodiments above set forth, it is to be understood that all matters herein set forth or shown in the accompanying drawings are to be interpreted as illustrative and not in a limiting sense.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

1. In a lighting fixture construction of the character described the combination of an electric light source with a casing comprising a housing portion, a base baiiie extending about said housing portion to provide a ventilating passage communicating the interior of the housing with the exterior of the fixture, both housing and baflle being adapted to be rigidly mounted to a support, a hemi-spherical shell portion for supporting said light source mounted for universal movement on the housing and forming a closure for the casing, said shell portion having an opening, the rim portions of said opening being located at unequal distances from the planeof the perimeter of the shell portion.

2. In a lighting fixture construction of the character described the combination of an electric light source with a casing comprising a housing portion adapted to be rigidly mounted to a support, a substantially hemi-spherical shell portion supporting said light source, an intumed fiange carried by said housing portion forming a seat to mount the shell portion for universal movement, said shell portion forming a movable closure for the casing, said shell portion having an opening, rim portions of said opening being located at unequal distances from the plane of the perimeter oi the shell portion.

3. The lighting fixture construction defined in claim 2, in which a lens is removably mounted in said opening, the support or the light source on the shell including means adjustable from the exterior oi the casing for varying the distance between said light source and the lens.

4'. In a lighting fixture construction of the character described, in combination, a relatively stationary housing, a hemi-spherical shell movably supported by and cooperating with said housingfor universal movement, the open dia-- metrical side of said shell being enclosed in said housing, the shell having a surface opening lying in a plane in angular relation with respect 'to the plane oi! said diametrical open side for increasing the efiective range of the universal movement of said shell with respect to the housing, cooperating means between the housing and an inner unexposed portion oi. the shell to limit said universal movement, and a light source supported by said shell located to project light beams through said surface opening.

5. In the lighting fixture construction defined in claim 4, the stationary housing having a ventilating passage communicating the interior of the housing with the exterior of the fixture.

6. In a lighting fixture construction of the character described, in combination, a light source adjustably mounted on a shell formed with a curved and an open side, a fixed supporting housing for movably mounting said shell to enclose said open side thereof, the curved surface of said shell having an opening located to project light beams originating at said light source, the planes of said open side and that 'of the shell opening being constructed and arranged in angular relationship, a lens fitted in said shell opening, and an adjustable means carriedby the shell for changing the character of the lighting projected by the fixture through the lens.

JOSEPH LEVY. 

